Mark Zuckerberg has not "checked in" anywhere on his personal Facebook profile, but employees at Verve Coffee Roasters on 41st Avenue said he popped in to sip coffee with friends.

The man worth more than $9 billion was also spotted strolling with his wife down East Cliff Drive to watch surfers in action during a high surf advisory on Sunday.

Zuckerberg launched his social networking website Facebook from a Harvard dorm room and moved his mind-blowingly successful company to Palo Alto, Calif. in 2004.

Every month, more than a billion people log into Facebook to connect with old friends, poke, tag, message, share, upload and like. Facebook reached its 1 billion mark in October 2012, a milestone that amounts to half the world's 2.5 billion Internet users.

Rumors are now buzzing around town that Zuckerberg bought a beach house in Santa Cruz recently.

Danny Keith, who some describe as the Mark Zuckerberg of Santa Cruz, fittingly ran into the famous computer programmer on Sunday at a surf spot called The Hook on East Cliff Drive.

"I was chilling at The Hook and was riding my bike when I saw him walking by. I said to myself, 'That's not Mark Zuckerberg,'" Keith said. "I took the opportunity to introduce myself, shook his hand, and I welcomed him and his wife to the neighborhood."

Keith said the Silicon Valley powerhouse couple was very nice to talk to and they were both "stoked" to be in Santa Cruz during Sunday's sunny weather.

Like Zuckerberg, Keith is an entrepreneur and founded a nonprofit called Grind Out Hunger. Keith perfected the art of social media to raise money and enthusiasm for his nonprofit group, which is all the more important because the majority of his volunteers are teenagers.

"I thanked him for everything he has done and for creating Facebook," Keith said.